利用Apache MINA来传递对象,这对了MINA来说非常容易,并且这也是Java网络编程中很常用的应用。

首先看两个用来传递的Java对象MyRequestObject和MyResponseObject,很简单只是实现了Serializable接口罢了。

MyRequestObject.java

package demo5.vo;

import java.io.Serializable;

public class MyRequestObject implements Serializable {

    private static final long serialVersionUID = 1L;

    private String name;

    private String value;

    public MyRequestObject(String name, String value) {
this.name = name;
this.value = value;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public String getValue() {
return value;
} public void setValue(String value) {
this.value = value;
} @Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("Request [name: " + name + ", value: " + value + "]");
return sb.toString();
}
}

MyResponseObject.java

package demo5.vo;

import java.io.Serializable;

public class MyResponseObject implements Serializable {

    private static final long serialVersionUID = 1L;

    private String name;

    private String value;

    public MyResponseObject(String name, String value) {
this.name = name;
this.value = value;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public String getValue() {
return value;
} public void setValue(String value) {
this.value = value;
} @Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("Response [name: " + name + ", value: " + value + "]");
return sb.toString();
}
}

Server端的代码

MyServer.java

package demo5.server;

import java.io.IOException;
import java.net.InetSocketAddress; import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.serialization.ObjectSerializationCodecFactory;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory; public class MyServer { private static final Logger logger = LoggerFactory.getLogger(MyServer.class); public static void main(String[] args) {
int bindPort = 10000; IoAcceptor acceptor = new NioSocketAcceptor(); //调用IoSessionConfig设置读取数据的缓冲区大小、读写通道均在10秒内无任何操作就进入空闲状态
acceptor.getSessionConfig().setReadBufferSize(2048);
acceptor.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10); acceptor.getFilterChain().addLast("logger", new LoggingFilter());
acceptor.getFilterChain().addLast("codec", new ProtocolCodecFilter(new ObjectSerializationCodecFactory())); acceptor.setHandler(new MyServerHandler()); try {
acceptor.bind(new InetSocketAddress(bindPort));
} catch (IOException ex) {
logger.error(ex.getMessage(), ex);
}
}
}

MyServerHandler.java

package demo5.server;

import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import demo5.vo.MyRequestObject;
import demo5.vo.MyResponseObject; public class MyServerHandler extends IoHandlerAdapter{
private static final Logger logger = LoggerFactory.getLogger(MyServerHandler.class); @Override
public void sessionCreated(IoSession session) throws Exception {
System.out.println("IP:"+session.getRemoteAddress().toString());
} @Override
public void sessionOpened(IoSession session) throws Exception {
} @Override
public void sessionClosed(IoSession session) throws Exception {
System.out.println("IP:"+session.getRemoteAddress().toString()+"断开连接");
} @Override
public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
System.out.println( "IDLE " + session.getIdleCount( status ));
} @Override
public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
logger.error(cause.getMessage(), cause);
session.close(true);
} @Override
public void messageReceived(IoSession session, Object message) throws Exception {
logger.info("Received " + message);
MyRequestObject myReqOjb = (MyRequestObject) message;
MyResponseObject myResObj = new MyResponseObject(myReqOjb.getName(), myReqOjb.getValue());
session.write(myResObj);
} @Override
public void messageSent(IoSession session, Object message) throws Exception {
logger.info("Sent " + message);
} }

Client端代码:

MyClient.java

package demo5.client;

import java.net.InetSocketAddress;

import org.apache.mina.core.RuntimeIoException;
import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.core.service.IoConnector;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.serialization.ObjectSerializationCodecFactory;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioSocketConnector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory; public class MyClient { private static final Logger logger = LoggerFactory.getLogger(MyClient.class); public static void main(String[] args) {
int bindPort = 10000;
String ip="localhost"; IoConnector connector = new NioSocketConnector();
connector.setConnectTimeoutMillis(10 * 1000); connector.getFilterChain().addLast("logger", new LoggingFilter());
connector.getFilterChain().addLast("codec", new ProtocolCodecFilter(new ObjectSerializationCodecFactory())); connector.setHandler(new MyClientHandler()); IoSession session = null;
try {
ConnectFuture future = connector.connect(new InetSocketAddress(ip, bindPort));
future.awaitUninterruptibly();
session = future.getSession();
} catch (RuntimeIoException e) {
logger.error(e.getMessage(), e);
} session.getCloseFuture().awaitUninterruptibly();
connector.dispose();
}
}

MyClientHandler.java

package demo5.client;

import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import demo5.vo.MyRequestObject;
import demo5.vo.MyResponseObject; public class MyClientHandler extends IoHandlerAdapter{
private static final Logger logger = LoggerFactory.getLogger(MyClientHandler.class); @Override
public void sessionCreated(IoSession session) throws Exception {
} @Override
public void sessionOpened(IoSession session) throws Exception {
MyRequestObject myObj = new MyRequestObject("我的name", "我的value");
session.write(myObj);
} @Override
public void sessionClosed(IoSession session) throws Exception {
} @Override
public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
} @Override
public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
logger.error(cause.getMessage(), cause);
session.close(true);
} @Override
public void messageReceived(IoSession session, Object message) throws Exception {
MyResponseObject myResObj = (MyResponseObject) message;
logger.info("Received " + myResObj);
session.close(true);
} @Override
public void messageSent(IoSession session, Object message) throws Exception {
logger.info("Sent " + message);
} }

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